Finding the Fourth Proportional to 391,434.13, 540,192.39 and 373,497.99
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Solution
The fourth proportional to 391,434.13, 540,192.39 and 373,497.99 is: 515,439.91
Step by Step Solution
- Step 1: Write the proportion equation
391,434.13 : 540,192.39 = 373,497.99 : x - Step 2: Convert to fraction form
391,434.13/540,192.39 = 373,497.99/x - Step 3: Cross multiply
391,434.13x = 540,192.39 × 373,497.99 - Step 4: Simplify right side
391,434.13x = 201,760,771,878.30 - Step 5: Solve for x
x = 201,760,771,878.30/391,434.13 - Step 6: Final answer
x = 515,439.91
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.